First post here. I post here to find out about the license stuff. My question is:

Can I develop commercial non-free applications with GTK+(v2,v3;GUI) without having to redistribute my source code OR open-source any part of my code at all, or pay any fee or royalties, or the need for a commercial license?I only need people who actually know about this, as "I think" kind of answers are not what I am looking for.

If you check http://www.gtk.org/, it is clearly written there that its under LGPL and what you can do with this. To be brief, you are allowed to create proprietary software.Quoting from the gtk website,

Quote:

Are there any licensing restrictions? GTK+ is free software and part of the GNU Project. However, the licensing terms for GTK+, the GNU LGPL, allow it to be used by all developers, including those developing proprietary software, without any license fees or royalties.

I can see it allows me to sell it without fees or royalties, but does it require me to redistribute my source or otherwise open source particular parts of my code?And does it allow me to bundle the GTK+ run-time?

If you want anything but `I think' answers then you will have to seek assistance from an attourney. I may be able to say I know but when it comes down to it I am not qualified to give legal advice and not liable for your basing decisions on my statements.

In most cases you will be fine and not have to release the source code but there are always grey areas where opinions may vary. However, not knowing the exact nature of your application, I (along with anyone not on your payroll and signing off on a NDA) can never `know' that your case is not in this grey area in order to give a definitive answer.

Personally I am biased against closed source. The need for responses like the one I have made are part of the problem. It inhibits innovation and development of ideas, e.g. not making code available will limit your options in finding future help here, etc. But when you are in a corporation that is IP xenophobes or has stubborn marketing department then often it has to be.

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